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Finding the Fourth Proportional to 151,695, 209,339.19 and 84,627

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Solution

The fourth proportional to 151,695, 209,339.19 and 84,627 is: 116,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,695 : 209,339.19 = 84,627 : x
  2. Step 2: Convert to fraction form
    151,695/209,339.19 = 84,627/x
  3. Step 3: Cross multiply
    151,695x = 209,339.19 × 84,627
  4. Step 4: Simplify right side
    151,695x = 17,715,747,632.13
  5. Step 5: Solve for x
    x = 17,715,747,632.13/151,695
  6. Step 6: Final answer
    x = 116,785.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.